My mentor has us using your 4-20ma simulator all the time. It reeeeeally helps me get a grasp of things as we use it on heating controls! You're a legend!
Great video explaining it. The best part is how does the PLC or meter read that 4-20 signal? By measuring the voltage drop across a precision resistor on the input! I used to know the resistor values off the top of my head for 0-1V, and 0-10V but it's been a long time.
Tim maybe you can help me here. I’m trying to drive an actuator (0(2)-10vdc or 4-20 ma) with an Arduino. Since the Arduino pin can only put out 5 volts I’m using the 4-20 ma input on the actuator. I’m using a 250 ohm resistor and can produce a 4-20 ma signal but my stroke on the actuator isn’t no where near fully open. Is this because (my guess anyway) that even though the input is a 4-20 ma it has to be based off of at least a 10v source for this actuator? Or is 4-20ma in controls 4-20 no matter what?
I have a question. I am trying to install a digital display meter that will be commanded by a 0-10VDC analog signal. Simply extending from control cabinet to outside of control room so truck drivers can watch a readout. Any suggestions on where I can get a LARGE weatherproof analog 0-10VDC readout?
I have a 0-10v output signal from a loadcell amplier to PLC. Can I wire a parallel connection from this to a digital panel meter in order to display it near the loadcell amplifier?
Typically yes. As long as the electrical load isn't more than the load cell can handle. It will have a minimum load resistance. Compare it to the panel meter and PLC consumption.
@@TimWilborne thankyou so much for the reply. The minimum load resistance is 200 ohm on loadcell amplifier, and input impedance on panel meter is 433kohm, and on plc is 200 kohm.
@@TimWilborne Thanks . I am a monthly subscriber to the TW Controls lesson series ! I learned more from you then I did in my previous classes for the community college I attended . Started on SLC 500 and Micrologix, love these micro 800s , they do a lot and inexpensive. I also have the 4-20mA simulator and the IP config tool you sell they help a lot in troubleshooting. You been a big help to me and I appreciate the lessons!
Hi I have watched some of your videos and they are very well done. I am not an engeneer but I am trying to make a device that is feed by: 1. In 110V 2. Out: 0-60V - 0-35mA. (with a knob to control the voltage and if is possible the mA as well. I want to use it as a intophoresis device. Can you help me out with the project? If there is a price for it, please let me know. Thanks.
Buy an off the shelf bench top power supply. Normally you can only control one value at a time either the current or the voltage. Since depending on the load the ratio of Volts to Amps will change one of the values to obtain the constant of the value you want. Say to maintain a 35mA output, depending on the load the voltage can be 1 Volt or 100V. If is you wanted a steady 60V, depending on the load your current will have to change to keep the Voltage constant. So in order to have a precise voltage AND current the load would have to be configured to achieve those constants.
Hi Miguel. You probably could get more precise engine speed control but it would depend on what type of precision you need for your application as to whether it would be helpful.
@@TimWilborne It`s a caterpillar speed governor, it controls the speed and the generator power at the axis output, then i`ve a problem because it`s very unstable at 60hz, and i don`t know if i may to change the type of signal or calibrate the pid controller.
@@Miguel-wx8ii I might talk to Caterpillar before making any adjustments. Most Caterpillar generators are good a regulating their frequency. I would lean towards it needing a tuneup first.
My mentor has us using your 4-20ma simulator all the time. It reeeeeally helps me get a grasp of things as we use it on heating controls! You're a legend!
Glad to hear it!
Nice comparison of both choices and why to use one over the other!
Thanks! Let me know if you think of anything special that needs covered in this analog series.
Your channel is great. Really solid content.
Thank you so much 👍
Very concise and clear explanation. Thanks!
You are welcome!
Great video explaining it. The best part is how does the PLC or meter read that 4-20 signal? By measuring the voltage drop across a precision resistor on the input! I used to know the resistor values off the top of my head for 0-1V, and 0-10V but it's been a long time.
Crap, this is a three year old video! But just came up in my feed.
Oldie but goodie, here is one on the resistor values 😁
ua-cam.com/video/DAMW5sKoH6E/v-deo.html
@@TimWilborne Ah yes! 250 Ohm. How could I forget that?
Thank you once again Tim
You are welcome!
great video. THANK YOU
You are welcome!
Tim maybe you can help me here.
I’m trying to drive an actuator (0(2)-10vdc or 4-20 ma) with an Arduino.
Since the Arduino pin can only put out 5 volts I’m using the 4-20 ma input on the actuator.
I’m using a 250 ohm resistor and can produce a 4-20 ma signal but my stroke on the actuator isn’t no where near fully open.
Is this because (my guess anyway) that even though the input is a 4-20 ma it has to be based off of at least a 10v source for this actuator?
Or is 4-20ma in controls 4-20 no matter what?
Awesome explanation as always Tim :-)
Glad you liked it Nigel!
thank you
You're welcome
Great point, well done.
Thanks for watching Mahdi!
My nigga every.time I have a question you have a video I don't regret buying your plc training at 800 thank you Sensei
learned something new today thanks again
Glad to hear it!
Excellent - thanks.
You are welcome!
I have a question. I am trying to install a digital display meter that will be commanded by a 0-10VDC analog signal. Simply extending from control cabinet to outside of control room so truck drivers can watch a readout. Any suggestions on where I can get a LARGE weatherproof analog 0-10VDC readout?
I have seen them before but never installed one so I'm not sure which brands are good and bad.
@@TimWilborne thank you
thank you Tim
You are welcome!
The video was very helpful, thanks
Glad you found it helpful. Let me know if you have any questions about analog come up.
Right on the money!
Thanks!
What is the difference between the range 0-5 v and 0-10 v ? some times we have both on input module types , when to use this or that ?
Typically you will use 0-10V in industrial applications.
Can you link me that voltage drop calculator Tim that was a nice one always good videos from you
Tim where do I buy one of those analog simulators? It looks like a nice tool to have for troubleshooting.
It sure is Jeff. Here is the link to buy one. www.theautomationstore.com/analog-simulator-and-generator-with-lcd-0-10vdc-and-4-20ma/
I have a 0-10v output signal from a loadcell amplier to PLC. Can I wire a parallel connection from this to a digital panel meter in order to display it near the loadcell amplifier?
Typically yes. As long as the electrical load isn't more than the load cell can handle. It will have a minimum load resistance. Compare it to the panel meter and PLC consumption.
@@TimWilborne thankyou so much for the reply. The minimum load resistance is 200 ohm on loadcell amplifier, and input impedance on panel meter is 433kohm, and on plc is 200 kohm.
@@jeesonpeter2049 You should be fine then.
@@TimWilborne thank you for the support and information❤️
How do you program a 4-20mA input using CCW .
Check out the analog section in this course.
courses.twcontrols.com/courses/allen-bradley-micro800-plc-training
@@TimWilborne Thanks . I am a monthly subscriber to the TW Controls lesson series ! I learned more from you then I did in my previous classes for the community college I attended . Started on SLC 500 and Micrologix, love these micro 800s , they do a lot and inexpensive. I also have the 4-20mA simulator and the IP config tool you sell they help a lot in troubleshooting. You been a big help to me and I appreciate the lessons!
That is great to hear!
Hi I have watched some of your videos and they are very well done. I am not an engeneer but I am trying to make a device that is feed by:
1. In 110V 2. Out: 0-60V - 0-35mA. (with a knob to control the voltage and if is possible the mA as well. I want to use it as a intophoresis device. Can you help me out with the project? If there is a price for it, please let me know. Thanks.
Buy an off the shelf bench top power supply. Normally you can only control one value at a time either the current or the voltage. Since depending on the load the ratio of Volts to Amps will change one of the values to obtain the constant of the value you want. Say to maintain a 35mA output, depending on the load the voltage can be 1 Volt or 100V. If is you wanted a steady 60V, depending on the load your current will have to change to keep the Voltage constant. So in order to have a precise voltage AND current the load would have to be configured to achieve those constants.
Ok im pretty new to this kind of stuff, how do u generate 4-20mA from a PLC instead of voltage output?
You must have a 4-20mA analog output.
@@TimWilborne do u have a video abt generating 4-20ma from a plc?
100 mv signals can be transmitted by wire long?
No, as we explained in this video, voltage drop will become an issue.
Thanks a lot!!! what could we do with an control loop of the engine governor? what`s the difference in this case?
Hi Miguel. You probably could get more precise engine speed control but it would depend on what type of precision you need for your application as to whether it would be helpful.
@@TimWilborne It`s a caterpillar speed governor, it controls the speed and the generator power at the axis output, then i`ve a problem because it`s very unstable at 60hz, and i don`t know if i may to change the type of signal or calibrate the pid controller.
@@Miguel-wx8ii I might talk to Caterpillar before making any adjustments. Most Caterpillar generators are good a regulating their frequency. I would lean towards it needing a tuneup first.
0-10VDC isnt 0-10v its usually 2-10VDC to detect disconnects but yes they both have pros and cons
no, that's why you would use 4-20mA
Great ❤️❤️
Thanks!
Who would run awg22 wire 100 feet ?
The answer is in one of those missing web links you keep complaining about 🙄
@@TimWilborne "Keep complaining about" Wow,
Adios to this channel...
Try @SolisPLC, he is probably more thorough...
Are you going to cover PID loops?
Hi Robert. Yes. After we go through analog, we'll do math instructions, then PID loops.
@@TimWilborne I'm waiting for math instructions 😍😍
why dont use 1 to 10VDC to avoid 0V
Overall, 4-20mA is more reliable if you are concerned about the 0V signal vs failure.